Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KKN19 19-25.019 found under Coupling Shaft Flexible by Dla Land And Maritime. The National Stock Number assigned to this part is 3010013564731, and the Federal Supply Class is 3010 Torque Converters And Speed Changers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like KKN19 19-25.019.